Toshiba HWS-G1901CNMR-E, Руководство по обслуживанию

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Domestic Hot Water Heat Pump Service Manual
20
7.7 B4 Hot on time
The unit can be programmed to deliver hot water from 1 to 30 days from the moment in which the
function is activated and the HOLIDAY mode is selected.
The unit switches to A1 AUTO mode after the desired number of days is reached. If OFF is
selected the function is not active.
i.e. To set a 7 day Hot on Time function
1.
Push the ‘OK’ button for the main menu
2. Use the Up or Down arrows to highlight
‘B Functions’ menu and push the ‘OK’ button
3.
Use the Up or Down arrows to highlight ‘B4 Hot on Time’ and push the ‘OK’ button.
4. Use the Up and Down arrows to select the number of days required for the unit to switch on to
A1 AUTO mode and push the ‘OK’ button.
The duration of the HOLIDAY mode is now set.
Note:
This function is not activated until ‘HOLIDAY’ is selected from the mode selection screen,
accessed by pushing the Up or Down arrow from the home screen.
7.8 B3 Low Tariff
The low tariff allows the electric heater and the heat pump to run only during periods with low
electricity prices, according to the menu item that regulate the program of the low tariff D17/ D18
(Low tariff weekday/weekends). The unit runs only during pre-defined hours of the day.
Code
Set point
name
Description Range
Factory
setting
B3
Low Tariff
Standard
If the PV function (B5) is active, this allows the electric heater and the heat
pump to run outside the low tariff period.
OFF/
Standard/
Optimal 1/
Optimal 2
OFF
Low Tariff
Optimal 1
This function allows the maximum exploitation of the lower electricity price
during the night periods between 00:00 and 05:00
Low Tariff
Optimal 2
This function allows the maximum exploitation of the lower electricity price
during the night periods between 00:00 and 05:00.
During the day, the unit works according to Low Tariff periods D17 and D18
Electric heater operation (Optimal 1 and Optimal 2)

The EL can operate only at night, between 01:00 and 05:00

The EL starts operating when the amount of heat that can be produced by the HP (Qdisp) is not
sufficient to cover the amount of heat needed to reach the water temperature set point by 5:00
(Qreq).

The EL cannot operate more than3 hours/day. 2 other hours are used to calculate the Qreq and
Qdisp (normallybetween00:00-01:00 and 02:00-03:00) and EL cannot be used in these periods.

The EL, if activated, works for at least one continuous hour.

If the water set point temperature has not been reached by 4:00, EL will operate for the last
hour(until05:00), or until the water temperature set point is reached.

In normal conditions, the EL is activated only if also the HP is active.

If the heat pump is not operating, the EL will be activated only in case the external ambient
conditions don’t allow HP operation (Inlet air temperaturebelow-7°C or above40 °C.